Negotiations: For its first post-Lincoln Center season, the New York City Opera’s unions are in talks for a new contract that would gut the chorus and the orchestra. (New York Times)

Discoveries: A rediscovered oil painting by Leonardo Da Vinci is to go on view at London’s National Gallery in November. (BBC)

Thievery?: Police in Baltimore are accusing Barry H. Landau, a known collector of presidential artifacts and memorabilia, and another man of stealing millions of dollars worth of historical documents from the Maryland Historical Society. (CNN)

In Memoriam: The online reservation system for the National September 11 Memorial & Museum in New York went live on Monday, allowing visitors to book their free pass to the site, which is set to open on the tenth anniversary of the attacks. (Reuters)

Critics: The conductor of one of Russia’s major orchestras claimed he was fired because of his outspoken remarks about Russian Prime Minister Vladimir Putin. (Telegraph)

Remembered: Roland Petit, France’s leading post-World War II ballet choreographer, known for breaking taboos in dance, died Sunday in Geneva. He was 87. (New York Times)